Question

If the first term of an ap is 2 and sum to n term is 155. Find the common difference 10th unit test karnataka

Answer 1

Answer:

Step-by-step explanation:

By solving with the help of the equation

Sn=n/2(a+l)

We get n=10

Puting the value in

Tn=a+(n-1)d

By solving this equation

We get d=3

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